drivers/md/dm-cache-policy-internal.h

Source file repositories/reference/linux-study-clean/drivers/md/dm-cache-policy-internal.h

File Facts

System
Linux kernel
Corpus path
drivers/md/dm-cache-policy-internal.h
Extension
.h
Size
4531 bytes
Lines
168
Domain
Driver Families
Bucket
drivers/md
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef DM_CACHE_POLICY_INTERNAL_H
#define DM_CACHE_POLICY_INTERNAL_H

#include <linux/vmalloc.h>
#include "dm-cache-policy.h"

/*----------------------------------------------------------------*/

static inline int policy_lookup(struct dm_cache_policy *p, dm_oblock_t oblock, dm_cblock_t *cblock,
				int data_dir, bool fast_copy, bool *background_queued)
{
	return p->lookup(p, oblock, cblock, data_dir, fast_copy, background_queued);
}

static inline int policy_lookup_with_work(struct dm_cache_policy *p,
					  dm_oblock_t oblock, dm_cblock_t *cblock,
					  int data_dir, bool fast_copy,
					  struct policy_work **work)
{
	if (!p->lookup_with_work) {
		*work = NULL;
		return p->lookup(p, oblock, cblock, data_dir, fast_copy, NULL);
	}

	return p->lookup_with_work(p, oblock, cblock, data_dir, fast_copy, work);
}

static inline int policy_get_background_work(struct dm_cache_policy *p,
					     bool idle, struct policy_work **result)
{
	return p->get_background_work(p, idle, result);
}

static inline void policy_complete_background_work(struct dm_cache_policy *p,
						   struct policy_work *work,
						   bool success)
{
	return p->complete_background_work(p, work, success);
}

static inline void policy_set_dirty(struct dm_cache_policy *p, dm_cblock_t cblock)
{
	p->set_dirty(p, cblock);
}

static inline void policy_clear_dirty(struct dm_cache_policy *p, dm_cblock_t cblock)
{
	p->clear_dirty(p, cblock);
}

static inline int policy_load_mapping(struct dm_cache_policy *p,
				      dm_oblock_t oblock, dm_cblock_t cblock,
				      bool dirty, uint32_t hint, bool hint_valid)
{
	return p->load_mapping(p, oblock, cblock, dirty, hint, hint_valid);
}

static inline int policy_invalidate_mapping(struct dm_cache_policy *p,
					    dm_cblock_t cblock)
{
	return p->invalidate_mapping(p, cblock);
}

static inline uint32_t policy_get_hint(struct dm_cache_policy *p,
				       dm_cblock_t cblock)
{
	return p->get_hint ? p->get_hint(p, cblock) : 0;
}

static inline dm_cblock_t policy_residency(struct dm_cache_policy *p)
{
	return p->residency(p);
}

static inline void policy_tick(struct dm_cache_policy *p, bool can_block)
{
	if (p->tick)
		return p->tick(p, can_block);
}

static inline int policy_emit_config_values(struct dm_cache_policy *p, char *result,
					    unsigned int maxlen, ssize_t *sz_ptr)
{
	ssize_t sz = *sz_ptr;

	if (p->emit_config_values)
		return p->emit_config_values(p, result, maxlen, sz_ptr);

	DMEMIT("0 ");
	*sz_ptr = sz;

Annotation

Implementation Notes